3v4l.org

run code in 300+ PHP versions simultaneously
<?php $isset = isset(0); echo $isset;
Output for 5.4.0 - 5.4.17
Parse error: syntax error, unexpected '0' (T_LNUMBER) in /in/6Rb92 on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_LNUMBER in /in/6Rb92 on line 3
Process exited with code 255.
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181.7 ms | 1395 KiB | 53 Q